package com.itheima.reggie.common;

import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;

import java.sql.SQLIntegrityConstraintViolationException;

//全局异常处理
//@ControllerAdvice 默认拦截所有 Controller 发出的异常
//@RestControllerAdvice 默认拦截所有 RestController 发出的异常，并且具有 @ResponseBody
//@ResponseBody：将方法返回的数据转换为json字符串给到响应体输出

//@ControllerAdvice(annotations = {RestController.class, Controller.class})
//@ResponseBody
//另一种方式
@RestControllerAdvice(annotations = {RestController.class,Controller.class})
@Slf4j
public class GlobalExceptionHandler {

    //异常处理方法
    @ExceptionHandler(SQLIntegrityConstraintViolationException.class)
    public R<String> exceptionHandler(SQLIntegrityConstraintViolationException ex) {
        log.error(ex.getMessage());

        if (ex.getMessage().contains("Duplicate entry")) {
            String[] spilt = ex.getMessage().split(" ");
            String msg = spilt[2] + "已存在";
            return R.error(msg);
        }

        return R.error("出现未知错误");
    }

    //异常处理方法
    @ExceptionHandler(CustomException.class)
    public R<String> exceptionHandler(CustomException ex) {
        log.error(ex.getMessage());

        return R.error(ex.getMessage());
    }
}
